‘I was the first of the Potter actors to learn to drive. I passed my test at the second time of trying. On the set, there’d always be a lot of talk about cars among the cast, although Daniel Radcliffe never joined in. He’s never been into cars at all.

‘My first ambition was to become an ice-cream man, which is why I bought the Bedford van. Not long after I first got it, I pulled into a pub to do a U-turn and there were eight kids with their pocket money out, hoping to buy a 99 or whatever. But I had nothing to give them. I’ve learnt my lesson since then.

'I keep my van well stocked. It’s got a proper machine that dispenses Mr Whippy ice cream and I buy my lollies wholesale – 50 for a tenner – so I never run short. I’m not allowed to sell my merchandise. I’d need a licence for that.

'I tend to avoid July and August, but the rest of the year I’ll drive around the local villages and if I see some kids looking like they’re in need of ice creams, I’ll pull over and dish them out for free. They’ll say, “Ain’t you Ron Weasley?” And I’ll say, “It’s strange, I get asked that a lot.”

‘The van often comes in useful. I drove it up to the set on the last day of filming on Harry Potter. The cast and crew were having a barbecue and I supplied the lollies and ice creams.

‘James and I grew up with a love for cars and a love for racing. We started with scooters, then moved on to go-karts and quad bikes. James will claim that he always won. I remember it differently.

‘He has a daredevil instinct that I lack. He will try pretty much anything, regardless of the physical risk. He would always be coming up with crazy stunts. One time, he built these long ramps and decided to jump over my grandad on a mountain bike. Thankfully, he made a clean jump. If he’d landed on Grandad, it wouldn’t have been a pretty sight.’